docs: def save_np_IdObj(Id):
      """ (to do) """
      LObj, LObjUSR = [], []
      Keys = sorted(Id.LObj.keys())
      for ii in range(0,len(Keys)):
          kk = sorted(Id.LObj[Keys[ii]].keys())
          Larr, LarrUSR = [], []
          for jj in range(0,len(kk)):
              if kk[jj]=='USRdict':
                  LarrUSR.append(np.asarray([Id.LObj[Keys[ii]][kk[jj]]],dtype=object))
              else:
                  Larr.append(np.asarray([Id.LObj[Keys[ii]][kk[jj]]],dtype=str))
          LObj.append( np.concatenate(tuple(Larr),axis=0) )
          LObjUSR.append( np.concatenate(tuple(LarrUSR),axis=0) )
      return LObj, LObjUSR